Zon-Kuthon

The deity Zon-Kuthon (pronounced ZONN-koo-THON) possesses one of the most twisted and evil minds in the Great Beyond. His position as god of pain is well earned, and he has been the root of countless tortures, murders, and worse throughout time.
History
Myths tell that at the beginning of time, he was a good deity who shared his appreciation of beauty, love, and the arts with his half-sister, Shelyn. When Zon-Kuthon grew jealous of his sister's talents, he abandoned the World for the dark places between and beyond the planes, and there was tormented and possessed by an alien being.
When Shelyn saw that her brother was forever changed, and not for the better, the two battled, her pleas and tears met with a violence Zon-Kuthon would never have been capable of. Shelyn finally wrested the golden glaive known as the Whisperer of Souls the two had shared (a symbol of their power) from her twisted brother's fingers, and established a tenuous truce that held in place more by silence and avoidance than any desire to actually coexist.